CN100592099C - Apparatus and method for charging battery cells - Google Patents
Apparatus and method for charging battery cells Download PDFInfo
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- CN100592099C CN100592099C CN200480005686A CN200480005686A CN100592099C CN 100592099 C CN100592099 C CN 100592099C CN 200480005686 A CN200480005686 A CN 200480005686A CN 200480005686 A CN200480005686 A CN 200480005686A CN 100592099 C CN100592099 C CN 100592099C
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
- H02J7/00716—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current in response to integrated charge or discharge current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3828—Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration
- G01R31/3832—Arrangements for monitoring battery or accumulator variables, e.g. SoC using current integration without measurement of battery voltage
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
Apparatus for charging a battery cell (4), said device comprising current control means (2) for delivering a charging current until a predetermined charging voltage value is reached, a charging statusdetector (2,6) devised to sense a charging parameter value, and charging control means arranged to terminate charging dependent on a predetermined charging criteria related to said charging parameter. The charging criteria is a charge level value, wherein said charging control means comprises a charging control device (1) for establishing a charge measurement value by integrating said measurementof charging current over charging time, and a charging terminator (5) devised to terminate charging dependent on said charge measurement value and said charge level value.
Description
Technical field
The present invention relates to the apparatus and method for that is used to charge the battery.The present invention is particularly useful for the charging of lithium ion or lithium polymer battery, and lithium ion or lithium polymer battery are suitable as the power supply of portable electric appts.
Background technology
Lithium-base battery has begun to find the application as displaying ratio such as the more high performance battery of Ni-MH battery.The lithium based storage battery has high-energy-density, therefore, is widely used so that increase using or the exercisable time of battery.Especially, on portable electron device, find that lithium-base battery is useful such as mobile phone, laptop computer and personal digital assistant PDA.The example of such lithium-base battery is a lithium ion battery, and another have in addition more the lithium-base battery type of high-energy-density be lithium polymer battery.
Lithium-base battery can not overcharge.The lead-acid battery that overcharges is some water that substitutes easily of electrolysis, and the NI-G of sealing or metal hydride battery have and be full of the voltage that electricity stops to rise, and still, even when being overcharged, the voltage of lithium ion and lithium polymer battery continues to rise.The voltage of lithium ion battery rises clearly at the end of charging.An outstanding feature of lithium-base battery is to stand such overcharging, thereby must avoid overcharging.When the too much lithium ion of spent anodes, can manifest and overcharge.In case overcharge, performance can occur and reduce.
Overcome the risk of overcharging and the consequent method of bringing to battery infringement of overcharging is to use the two step charge method that is called constant current constant voltage CCCV.Usually, the constant voltage CV of lithium battery is 4.2V.Use the CCCV method, at first charge the battery, reach 4.2V up to cell voltage with constant current.In case reach described level, charge control system in the charging of 4.2V place regulating cell, and is proceeded charging and is dropped to predetermined value up to charging current in step subsequently.In case detect predetermined current level, perhaps reach given time bar, think that battery is filled.
Yet lithium-base battery is not only to the sensitivity of overcharging, and they are same responsive to high voltage storage and charging.This means that the time that battery is under the high voltage is long more, will its cycle life be worsened more.A kind of effort that overcomes described problem is to reduce CV simply to for example 4.1V.On the other hand, owing to reduced charging voltage, what accompany with this solution is to reduce the capacity of battery inevitably.
With according to CCCV method charging problem together be, current index ground reduces during the CV stage, wherein approaching more arrival predetermined value, electric current to reduce speed low more.This means, keep battery to be in high voltage, may cause infringement during this period battery at the time durations of delaying.The effect of Current Control charging process time is that circulating at first of battery life applies stronger electric charge.Faster on the also aging ground of the initial stage of battery life battery, and, when using same Current Control process, will transmit less electric charge to battery at the after-stage of battery life.Therefore, this causes aging along with battery, and battery working time shortens between the charging.
Thereby, also have improved needs at technical elements to the battery of high voltage sensitivity, satisfy the demand of market to cycle life and high power capacity (being battery working time).
Summary of the invention
Therefore, the objective of the invention is to overcome the top relevant the deficiencies in the prior art of determining.
According to first aspect, reach described purpose by the equipment that is used to charge the battery, described equipment comprises: be used to carry charging current up to the current control device that reaches predetermined charge voltages; Be designed to detect the charged state detector of charge parameter value; And be arranged to the battery charge controller that the foundation charging standard relevant with described charge parameter stops charging, wherein said charging standard is the charge level value.
In one embodiment, described battery charge controller comprises the charging termination device that is used for determining the charge controller of charge measurements and is designed to charge according to described charge measurements and the termination of described charge level value.
The duration of charging measurement result that is provided by time measuring unit is be provided described charge parameter value.
In one embodiment, the charging current measuring unit of described equipment is designed to provide the charging current measurement result, and wherein said charge controller is arranged to utilize duration of charging measurement result and charging current measurement result to determine charge measurements by calculating.
Described charge controller the measurement result to described charging current preferably was provided in the duration of charging that is provided by described time measuring unit quadratures.
Advantageously, described equipment also comprises the current sinking measuring unit, the latter is designed to provide measurement of consumption current, and wherein said charge controller is arranged to utilize the elapsed time measurement result and the described measurement of consumption current that are provided by described time measuring unit to determine charge measurements by calculating.
Described charge controller the measured value to described current sinking is provided in the elapsed time that is provided by described time measuring unit quadratures.
In one embodiment, described charge controller is connected to the charged state pen recorder and is designed to the determined charge measurements of storage on described charged state pen recorder.
Described charge controller preferably is arranged to by combination charge stored measured value and is depended on that electric current determines actual charge value to the charge measurements of the integration of time,, the electric charge on battery during described integral time changes from described charge stored measured value.
In a preferred embodiment, described charge controller is arranged to control described charging termination device to stop charging when described actual charge value reaches described charge level value.
In a specific embodiment, described charge controller is arranged to when described charge measurements reaches described charge level value, detects the charging current measured by described charging current measuring unit by measured value.Controller also comprises and is used for more described device by measured value and predetermined cutoff value, and wherein said charge controller is arranged to that foundation is described relatively to reduce described charge level value.
Be lower than described predetermined cutoff value if described charge controller preferably is arranged to the described measured value that ends, then reduce described charge level value.Controller is arranged to reduce described charge level value according to the predetermined charge value in one embodiment, and in another embodiment, reduces described charge level value according to the predetermined percentage of charge value.
In another specific embodiment, described charge controller is arranged to when described charge measurements reaches described charge level value, detect the charging current measured by described charging current measuring unit by measured value.Controller comprises also and is used for more described device by measured value and predetermined cutoff value that wherein said charge controller is arranged to the described auxiliary charging scheme that relatively is transformed into of foundation.
In one embodiment, described auxiliary charging scheme is to stop being charged as target when described charging current reaches described predetermined cutoff value.In another embodiment, described auxiliary charging scheme is to stop being charged as target in the duration of charging of presetting in the past.
Described equipment can be included in the portable electric appts, and described battery can be installed in the described portable electric appts.
Perhaps, described equipment can be connected to described battery, and wherein said controller and described battery are included in the battery packing box.
In another alternative embodiment, described equipment is included in the battery charger that can be installed to described battery.
In a preferred embodiment, described equipment is suitable for controlling the charging of lithium-base battery.
Advantageously, described equipment is suitable for controlling the charging of lithium polymer battery or lithium ion battery.
According to second aspect, reach the purpose of being stated by the method that is used for battery charge, said method comprising the steps of:
Voltage on the described battery of-detection;
-provide charging current till reaching predetermined recharge voltage level value to described battery;
-definite charge measurements that is transported to the electric charge of described battery by described charging current; And
Described measured value of-foundation and predetermined charge level value stop the supply of described charging current.
Described method is preferably further comprising the steps of:
-according to described charge measurements, calculate the actual charge value in the described battery;
-more described actual charge value and described predetermined charge level value; And
-when described actual charge value reaches described predetermined charge level value, stop the supply of described charging current.
In one embodiment, described method is further comprising the steps of:
-utilize the duration of charging measurement result to determine the described charge measurements of the electric charge of conveying.
Advantageously, said method comprising the steps of:
-measurement charging current; And
-utilize described duration of charging measurement result and described charging current measurement result by calculating the described charge measurements of the electric charge of determining conveying.
Described method preferably includes following steps:
-measurement charging current; And
-described charge measurements by the electric charge of the measurement result of described charging current being assigned to determine to the duration of charging quadrature carry.
In one embodiment, said method comprising the steps of:
-utilize the elapsed time measurement result to determine from the charge measurements of the electric charge of described battery discharge.
Advantageously, said method comprising the steps of:
-measurement current sinking; And
-utilize described elapsed time measurement result and described measurement of consumption current by calculating the charge measurements of determining from the electric charge of described battery discharge.
Described method is preferably further comprising the steps of:
-measurement current sinking; And
-charge measurements by the electric charge of described measurement of consumption current being quadratured to determine to elapsed time discharge from described battery.
In one embodiment, said method comprising the steps of:
-definite the charge measurements of storage on the charged state pen recorder.
In a preferred embodiment, said method comprising the steps of:
-fetch the charge stored measured value;
-depend on that by combination electric current determines actual charge value to the charge measurements and the described charge measurements of fetching of the integration of time; And
-upgrade described charged state pen recorder by storing described actual charge value.
In one embodiment, said method comprising the steps of:
-monitor described actual charge value; And
-when described actual charge value reaches described charge level value, stop charging.
Described method preferably includes following steps:
-at first provide constant charge current, till the voltage on the described battery is increased to described predetermined charge voltages level value to described battery.
In a specific embodiment, said method comprising the steps of:
-when described charge measurements reaches described charge level value, detect the charging current measured by described charging current measuring unit by measured value;
-more described by measured value and predetermined cutoff value; And
-relatively reduce described charge level value according to described.
Described method preferably includes following steps:
If-the described measured value that ends is lower than described predetermined cutoff value, then reduces described charge level value.
In one embodiment, said method comprising the steps of:
-reduce described charge level value according to predetermined charge value.
In another embodiment, said method comprising the steps of:
-reduce described charge level value according to the predetermined percentage of charge level value.
In another specific embodiment, said method comprising the steps of:
-when described charge measurements reaches described charge level value, detect the charging current measured by described charging current measuring unit by measured value;
-more described by measured value and predetermined cutoff value; And
-according to the described auxiliary charging scheme that relatively is transformed into.
In one embodiment, said method comprising the steps of:
-when described charging current drops to predetermined cutoff value, stopping charging in the described auxiliary charging scheme as target.
In another specific embodiment, said method comprising the steps of:
-stopping charging in the described auxiliary charging scheme when the duration of charging past tense that preset as target.
In a preferred embodiment, described method is used to control the charging to lithium-base battery.
Advantageously, described method and apparatus is used to control the charging to lithium polymer battery or lithium ion battery.
Description of drawings
Describe the present invention in detail referring now to preferred embodiment that provide as just example and illustrated in the accompanying drawings, in the accompanying drawing:
Fig. 1 schematically illustrates the exemplary embodiment according to equipment of the present invention;
Fig. 2 illustrates demonstration according to the discharge capacity of the measurement of the battery of first embodiment of the invention charging with according to the synoptic diagram of the corresponding measurement result of the battery of art methods charging; And
Fig. 3 illustrates the synoptic diagram of demonstration according to the discharge capacity of the measurement of the battery of second embodiment of the invention charging.
Embodiment
This explanation relates to the battery that uses with electronic equipment (such as communication or data terminal).One type the communication terminal that matches with described invention is a portable radio communication terminal, such as mobile phone.Yet described invention is applicable to the electronic installation of many types, particularly portable electron device, such as pager, and sender, electronic organisers, smart phone, PDAs (personal digital assistant), laptop computer etc.In addition, should emphasize term " comprise ", when the feature that in this instructions and appending claims, is used to represent comprised, unit or step, must not be interpreted as removing expressly statement outside got rid of the existence of other feature units or step.
Fig. 1 illustrates the embodiment according to equipment of the present invention.Should emphasize, the element of accompanying drawing is shown, this means that they needn't represent physical entity with the form of functional item with communication interconnect.Can realize being used to calculating device with control procedure or device with hardware, still, also can realize in many cases by microprocessor system with related software.The present invention thereby can comprise hardware and software.
In such as the electronic installation of mobile phone, can realize being used to control the equipment of battery charge.Perhaps, in carrying the box of battery, comprise described equipment.The another kind of selection is the described equipment of realizing in charger, and described charger can be connected to power supply, such as mains outlet.
Fig. 1 illustrates the battery 4 with two electrodes, and it can be lithium ion or lithium polymer battery.As representing by the dotted line on the left side that in the accompanying drawings battery 4 can be connected to the equipment that is used for to battery 4 chargings.At the other end, description be power supply 8, it can be the battery charger that can be connected to the electronic installation that carries described equipment and battery 4.Thereby power supply 8 provides electric energy to the equipment that is used for to battery 4 chargings.When giving battery 4 chargings, use the process of revising according to CCCV.The charging termination device 5 that comprises switch 5 forms, it can be adjusted to the off-state that the charging that is used to block battery 4 connects.The voltage that voltage measurement or watch-dog 3 detect on the battery 4.Current control device 2 is connected in the battery electrode tie point at least one.
In the time will giving battery 4 chargings, carried out for first charging stage with constant current, this is by described control device 2 controls.In case described constant current is provided, the voltage that voltage monitoring equipment 3 detects on the battery 4 is along with its voltage of carrying out that charges will rise.When voltage reaches predetermined charge voltages level value (for example it can be 4.2V to lighium polymer or lithium ion battery), detect described voltages and report to current control device 2 by voltage monitor 3, as what represent by the arrow that connects two parts in the accompanying drawings.
In case reach the recharge voltage level value, charging is carried out according to constant voltage process.When charging the battery under the recharge voltage level value, battery 4 will constantly reduce charging current.In this charging stage, should use desired value or level to determine when and stop charging, because do not expect that applying the high-tension time to battery is longer than the needed time, this is owing to can cause the cause of degeneration like this.According to the present invention,, partly be target with the Current Control constant voltage of charging about the total electrical charge of battery.In other words, charging is proceeded till determining to have reached predetermined charge level.This is finished by charge controller 1, and its detection and measurement are by the electric current of battery 4.In exemplary drawings, indicator current control module 2 also plays the effect of charging current measuring unit, and the latter is designed to provide the measurement result of charging current.Yet, in alternative embodiment, can obtain this measurement result of charging current by independent unit.In addition, charge controller 1 is connected to time measuring unit 6.By the charging current of measuring was quadratured to the duration of charging, charge controller 1 calculates the electric charge of carrying to battery 4 between charge period.Like this, obtain to relate to the charge measurements of the quantity of electric charge that flows to battery 4.
In case the total electrical charge that charge controller detects in the battery 4 reaches described predetermined charge level, it triggers charging termination device 5 to stop to present electric current to battery 4.
Use when carrying the electronic installation of present device when as was expected, when for example being used to call out with regard to mobile phone, electronic circuit 9 that will be by electronic installation is from battery 4 discharge electric power.Under described operator scheme, also take from the electric current of battery 4 by the measurement of current sinking measuring unit.In exemplary drawings, expression current control device 2 also plays the current sinking measuring unit, and the latter is designed to provide the measurement result from the current sinking of battery 4.Yet, in alternative embodiment, can obtain the measurement result of this current sinking by independent unit.In the present embodiment, as being used for the duration of charging, charge controller 1 is quadratured the current sinking of described detection to the elapsed time that is detected by time measuring unit 6.The charge measurements of integration can be used for for example providing to the user warning of battery charge, is used for expression and is giving battery 4 chargings.Yet in the present invention, the charge measurements that relates to the amount of the electric charge of carrying from battery 4 also is directly used in the control charging.Charged state pen recorder 7 is connected to charge controller 1, and charged state pen recorder 7 comprises the memory of data that is used to store about the electric charge of measuring.Any variation of the electric charge of battery 4 is detected by current measuring unit 2 and is calculated by charge controller 1.Current or the actual electric charge of storage battery 4 in charged state pen recorder 7.When charging the battery, the electric charge of battery 4 increases according to the charge value of measuring, and then, it is added on the actual charge value in the charged state pen recorder 7.In addition, when consuming cells 4, the electric charge of battery 4 reduces according to measuring charge value, and then, it is deducted in actual charge value from charged state pen recorder 7.Like this, constantly upgrade the actual charge value in the charged state pen recorder 7, and it is the described actual charge value that charge controller 1 is compared with predetermined charge level, triggers terminator 5 to stop charging so that determine when.
Fig. 2 illustrates when charging according to the first embodiment of the present invention, and when charging according to prior art CCCV process, to the synoptic diagram of the 400 total charging cycle of 720 Milliampere Hours (mAh) lithium polymer battery.To the left side of figure, Z-axis is represented the possible discharge capacity of battery separately, just the amount of the electric charge that can extract from battery after the charging.To the right of figure, Z-axis is represented the charging current when charging termination, so-called cut-off current.
According to the present invention, with the target of discharge capacity as charging, therefore, discharge capacity will be always identical after circulation each time, be 720mAh in this case.This is illustrated by solid line 22, and the latter is illustrated in according to the measurement result on the battery of first embodiment of the present invention charging.Therefore, the benefit of the present invention according to first embodiment is that the user will always know how many capacity he or she will have after the charging completely.Dotted line 23 expressions are by the cut-off current of the measurement on the battery of the process charging of invention.As can be seen, its far from constant.In fact, along with battery aging it will descend owing to will reach the longer duration of charging of target capacity needs.
Fig. 3 is similarly to illustrate the second embodiment of the present invention with Fig. 2, although do not show the discharge capacity of prior art.Dotted line 32 among Fig. 3 is illustrated in the measured value according to the cut-off current in the model machine of the present invention, just the charging current value when reaching target discharge capacity or charge level value 33.When lithium-based battery cell ages, the duration of charging that need reach target discharge capacity increases.Yet as previously outlined, it is long more that lithium-base battery is subjected to action of high voltage, and the risk of cycle life deterioration is big more.In certain occasion, can determine the duration of charging be increased to may be harmful to battery level.For the safety practice that prevents such situation is provided, the second embodiment of the present invention has defined the constant-voltage charge stage that is divided into two or more subs, has been divided into two subs in the illustrated embodiment.At this, compare with the embodiment of Fig. 2 and to have added auxiliary charging parameter, i.e. cut-off current.
Between the charge period of battery, by current measuring unit 2 monitoring cut-off currents, and as long as cut-off current is bigger than predetermined cutoff value, just with the process of Fig. 2 in identical mode carry out the charging process process.This is represented by sub 30 in Fig. 3.Test and simulation show, can adopt the cut-off current that drops to 20-30mA and not serious infringement lithium-base battery, still, because measuring accuracy and other factors, the cut-off current value of 40-50mA is suitable for as predetermined cutoff value, just minimum admissible cut-off current.This is in the accompanying drawings also by at the arrow at 34 places, represented by the end value of the cut-off current curve 32 of void in sub 30.Current measuring unit 2 can be responsible for measuring actual cut-off current and it and predetermined cutoff value are compared, and reports to charge controller 1 when arriving cutoff.Perhaps, inform the cut-off current of measurement to the charge controller 1 of wherein carrying out comparison with signal.
In case reach this point 34, just when detecting cut-off current and be equal to or less than predetermined cutoff value, charge controller 1 reduces aimed charge level value 33 by predetermined process.The beginning of second sub 31 of this sign constant-voltage charge.(it is similarly applicable to the embodiment of Fig. 2) in one embodiment, charged state pen recorder 7 usefulness act on the storer of storage target discharge capacity or charge level value 33.When detecting current cutoff value, charge controller 1 is realized reducing of target discharge capacity value 33 by the storing value of revising in the charged state pen recorder 7.In concrete embodiment, realize described reducing by reducing target discharge capacity value according to the predetermined charge value, described predetermined charge value can be 5-100mAh, 20-70mAh, for example 50mAh perhaps more clearly say so.In alternative specific embodiment, target discharge capacity value is reduced definite number percent of its existing value, such as 1-20%, the 2-10% that perhaps more clearly says so, for example 5%.
In the example that illustrates, solid line 33 expression target discharge capacity, it should be read according to the Z-axis that discharge cycles is counted on the left side.Obtain thereon in the prototype equipment of measurement result of Fig. 3, after about 350 discharge cycles, reach the predetermined cutoff value of about 45mA, indicate in the accompanying drawings by Reference numeral 34.Target discharge capacity value reduces 5% then, reduces to 684mAh from 720mAh.Therefore, measured cut-off current 32 increases about 45mA automatically in circulation subsequently.Yet, owing to wearing out of battery, along with each circulation cut-off current will continue to reduce natch.This is also clearly visible in Fig. 3.Needless to say, the level that provides in Fig. 3 only is exemplary.
In the specific modification of the embodiment of Fig. 3, second sub 31 will be proceeded in the same mode as first sub 30, mean if cut-off current 32 in a single day falls to once more to be lower than predetermined cutoff value, then realize new the reducing of target discharge capacity value 33.For second sub 32, predetermined cutoff value and target discharge capacity value reduce can be with sub 31 identical, perhaps different.Significantly, can repeat the number of any expection of described process sub, up to the end that reaches cycle life.This can be defined as for example given number percent of original discharge capacity value, and for example 80%.
The benefit of described second embodiment of the present invention is to compare characteristic that can even further improve cycle life with first embodiment.In case reduce target discharge capacity value, discharge capacity will be lower slightly, still, will prolong cycle life.Naturally, when target discharge capacity value reduces, the duration of charging also will reduce, and perhaps this be desired to the user.
In alternative modification of second embodiment, also be designed to guarantee can not surpass predetermined cutoff value, can be by target discharge capacity value reduce to start second sub.On the contrary, reach predetermined cutoff value in case detect cut-off current, just by traditional based on timer charging or be controlled at the charging of second sub based on the charging that ends.This means that target discharge capacity value will have unexpected landing, but, in of the once more charging of second sub, with the prolongation that in most of the cases can not cause as the same cycle life in the process that proposes at Fig. 3 by the control of predetermined cutoff value for example.However, when using target discharge capacity value to control charging, overcome unnecessary overcharge relevant with the CV process of prior art at first sub.
Principle of the present invention, preferred embodiment and mode of operation have above been described.Yet the present invention should not be interpreted as being limited to above-mentioned certain embodiments, above-mentioned certain embodiments should be used as illustrative rather than restrictive.Therefore, be appreciated that claims restricted portion that does not depart from by following, those skilled in the art can change in those embodiment.
Claims (42)
1. equipment that is used for to battery (4) charging, described equipment comprises: the current control device (2) that is used to carry charging current; Be designed to detect the charged state detector (2,6) of charge parameter value; Be used for determining the charge controller (1) of charge measurements; And the charging termination device (5) that is designed to stop according to described charge measurements and predetermined charging standard charging, it is characterized in that: described charging standard is the charge level value; And wherein said charge controller (1) be arranged to when described charge measurements reaches described charge level value, to detect charging current by measured value, also comprise being used for more described device, and be arranged to that foundation is described relatively to reduce described charge level value by measured value and predetermined cutoff value.
2. equipment as claimed in claim 1 is characterized in that: described charge controller (1) describedly is lower than described predetermined cutoff value then reduces described charge level value by measured value if be arranged to.
3. equipment as claimed in claim 1 or 2 is characterized in that: described charge controller (1) is arranged to reduce described charge level value according to the predetermined charge value.
4. equipment as claimed in claim 1 or 2 is characterized in that: described charge controller (1) is arranged to reduce described charge level value according to the predetermined percentage of described charge level value.
5. equipment as claimed in claim 1 is characterized in that: described charge controller (1) is arranged to according to the described auxiliary charging level that relatively transforms to.
6. equipment as claimed in claim 5 is characterized in that: described auxiliary charging level is to stop being charged as target when described charging current reaches described predetermined cutoff value.
7. equipment as claimed in claim 5 is characterized in that: described auxiliary charging level is to stop being charged as target after presetting the past in duration of charging.
8. as claim 1 or 5 described equipment, it is characterized in that: charging current measuring unit (2) is designed to provide the charging current measurement result, and time measuring unit (6) is designed to provide the duration of charging measurement result, and wherein said charge controller (1) is arranged to utilize described duration of charging measurement result and described charging current measurement result to determine charge measurements by calculating.
9. equipment as claimed in claim 8 is characterized in that: described charge controller (1) is arranged to described charging current measurement result was quadratured to the duration of charging.
10. equipment as claimed in claim 8, it is characterized in that: current sinking measuring unit (2) is designed to provide measurement of consumption current, and wherein said charge controller (1) is arranged to utilize the elapsed time measurement result and the described measurement of consumption current that are provided by described time measuring unit (6) to determine charge measurements by calculating.
11. equipment as claimed in claim 10 is characterized in that: described charge controller (1) is arranged to described measurement of consumption current is quadratured to elapsed time.
12. as claim 1 or 5 described equipment, it is characterized in that: described charge controller (1) is connected to charged state pen recorder (7), and the charge measurements that described charge controller (1) is designed to determine is stored in the described charged state pen recorder.
13. equipment as claimed in claim 12 is characterized in that: described charge controller (1) is arranged to by combination charge stored measured value and is depended on that electric current determines actual charge value to the charge measurements of the integration of time.
14. equipment as claimed in claim 13 is characterized in that: described charge controller (1) is arranged to when described actual charge value reaches described charge level value, controls described charging termination device (5) to stop charging.
15. as claim 1 or 5 described equipment, it is characterized in that: described equipment is included in the portable electric appts, described battery (4) can link to each other with described portable electric appts.
16. as claim 1 or 5 described equipment, it is characterized in that: described equipment is connected to described battery (4), wherein said equipment and described battery are included in the battery packing box.
17., it is characterized in that as claim 1 or 5 described equipment: described equipment be included in can with battery charger that described battery (4) link to each other in.
18. as claim 1 or 5 described equipment, it is characterized in that: described equipment is suitable for controlling the charging of lithium-base battery (4).
19. as claim 1 or 5 described equipment, it is characterized in that: described equipment is suitable for controlling the charging of lithium polymer battery (4).
20. as claim 1 or 5 described equipment, it is characterized in that: described equipment is suitable for controlling the charging of lithium ion battery (4).
21. a method that is used to charge the battery said method comprising the steps of:
-provide charging current to described battery;
-determine by the charge measurements of described charging current to the electric charge of described battery conveying;
Described measured value of-foundation and predetermined charge level value stop the supply of described charging current;
-when described charge measurements reaches described charge level value, detect charging current by measured value;
-more described by measured value and predetermined cutoff value; And
-relatively reduce described charge level value according to described.
22. method as claimed in claim 21, comprising following steps:
If-the described measured value that ends is lower than described predetermined cutoff value, then reduces described charge level value.
23. as claim 21 or 22 described methods, comprising following steps:
-reduce described charge level value according to the predetermined charge value.
24. as claim 21 or 22 described methods, comprising following steps:
-reduce described charge level value according to the predetermined percentage of described charge level value.
25. method as claimed in claim 21, comprising following steps:
-according to the described auxiliary charging level that relatively is transformed into.
26. method as claimed in claim 25, comprising following steps:
-when described charging current drops to described predetermined cutoff value, to stop the target that is charged as in the described auxiliary charging level.
27. method as claimed in claim 25, comprising following steps:
-to stop the target that is charged as in the described auxiliary charging level when presetting the duration of charging past tense.
28. as claim 21 or 25 described methods, comprising following steps:
-measure described charging current by charging current measuring unit (2).
29. as claim 21 or 25 described methods, comprising following steps:
-according to described charge measurements, calculate the actual charge value on the described battery;
-more described actual charge value and described predetermined charge level value; And
-when described actual charge value reaches described predetermined charge level value, stop the supply of described charging current.
30. as claim 21 or 25 described methods, comprising following steps:
-utilize the duration of charging measurement result, determine the described charge measurements of the electric charge of conveying.
31. method as claimed in claim 30, comprising following steps:
-measurement charging current; And
-utilize described duration of charging measurement result and described charging current measurement result by calculating the described charge measurements of the electric charge of determining conveying.
32. method as claimed in claim 30, comprising following steps:
-measurement charging current; And
-utilize described charging current measurement result the integration in duration of charging to be determined the described charge measurements of the electric charge of conveying.
33. method as claimed in claim 29, comprising following steps:
-utilize the elapsed time measurement result to determine from the charge measurements of the electric charge of described battery discharge.
34. method as claimed in claim 33, comprising following steps:
-measurement current sinking; And
-utilize described elapsed time measurement result and described measurement of consumption current charge measurements by the electric charge that calculates to determine to discharge from described battery.
35. method as claimed in claim 33, comprising following steps:
-measurement current sinking; And
-utilize described measurement of consumption current that time consuming integration is determined from the charge measurements of the electric charge of described battery discharge.
36. as claim 21 or 25 described methods, comprising following steps:
-charge measurements of determining is stored in the charged state pen recorder.
37. method as claimed in claim 36, comprising following steps:
-fetch the charge stored measured value;
-depend on that by combination electric current determines actual charge value to the charge measurements of the integration of time and the charge measurements of being fetched; And
-upgrade described charged state pen recorder by storing described actual charge value.
38. method as claimed in claim 37, comprising following steps:
-monitor described actual charge value; And
-when reaching described charge level value, described actual charge value stops charging.
39. as claim 21 or 25 described methods, comprising following steps:
-at first provide constant charging current, till being increased to the predetermined charge voltages level value at the voltage on the described battery to described battery.
40. as claim 21 or 25 described methods, wherein said battery is a lithium-base battery.
41. as claim 21 or 25 described methods, wherein said battery comprises lithium polymer battery.
42. as claim 21 or 25 described methods, wherein said battery comprises lithium ion battery.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03445030.4 | 2003-03-03 | ||
| EP03445030A EP1455194B1 (en) | 2003-03-03 | 2003-03-03 | Apparatus and method for charging battery cells |
| US60/451,982 | 2003-03-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1756963A CN1756963A (en) | 2006-04-05 |
| CN100592099C true CN100592099C (en) | 2010-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200480005686A Expired - Fee Related CN100592099C (en) | 2003-03-03 | 2004-02-13 | Apparatus and method for charging battery cells |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1455194B1 (en) |
| CN (1) | CN100592099C (en) |
| AT (1) | ATE317983T1 (en) |
| DE (1) | DE60303590T2 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2899034B1 (en) | 2006-03-21 | 2013-07-05 | Accumulateurs Fixes | DEVICE AND METHOD FOR SELF-REGULATING THE CHARGE OF AN ELECTROCHEMICAL GENERATOR |
| US8405361B2 (en) * | 2007-09-21 | 2013-03-26 | Qualcomm Incorporated | System and method for charging a rechargeable battery |
| KR100965743B1 (en) | 2008-04-25 | 2010-06-24 | 삼성에스디아이 주식회사 | Method of braking current for rechargeable battery and battery pack using the same |
| US20100102781A1 (en) * | 2008-10-24 | 2010-04-29 | Sony Ericsson Mobile Communications Ab | Apparatus and method for charging a battery |
| GB0913769D0 (en) * | 2009-08-06 | 2009-09-16 | Eh Europe Gmbh | A method and apparatus for charging a battery |
| GB0913770D0 (en) * | 2009-08-06 | 2009-09-16 | Eh Europe Gmbh | A method and apparatus for charging a lead acid battery |
| WO2013113400A1 (en) * | 2012-02-03 | 2013-08-08 | Siemens Aktiengesellschaft | Method for protecting a charging cable, and a charging device |
| WO2014044292A1 (en) * | 2012-09-18 | 2014-03-27 | Phonak Ag | Method for charging a nimh battery, a battery charger and a system comprising a battery charger and a hearing device |
| CN104777432B (en) * | 2015-04-30 | 2018-05-29 | 无锡中感微电子股份有限公司 | Rechargeable battery safety detecting method and rechargeable battery safety detection circuit |
| CN109004704A (en) * | 2018-07-23 | 2018-12-14 | 佛山市众盈电子有限公司 | A kind of three level power frequency supply charging adjusting methods |
| CN111337840A (en) * | 2020-05-18 | 2020-06-26 | 佛山市欢欢电子商务有限公司 | Capacity measuring method in charging process |
| EP4254596A4 (en) * | 2020-12-25 | 2024-02-28 | Ningde Amperex Technology Ltd. | Charging method, electronic apparatus, and storage medium |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1432318A (en) * | 1973-07-04 | 1976-04-14 | Vdo Schindling | Apparatus for determining the state of charge of accumulator |
| SE400427B (en) * | 1977-02-17 | 1978-03-20 | Ericsson Telefon Ab L M | PROCEDURE FOR CHARGING AND MONITORING A BATTERY, AND DEVICE FOR PERFORMING THE PROCEDURE |
| US6107802A (en) * | 1992-07-08 | 2000-08-22 | Matthews; Wallace Edward | Battery pack with monitoring function utilizing association with a battery charging system |
| US5761072A (en) * | 1995-11-08 | 1998-06-02 | Ford Global Technologies, Inc. | Battery state of charge sensing system |
| US6094033A (en) * | 1998-10-02 | 2000-07-25 | Georgia Tech Research Corporation | Battery state of charge detector with rapid charging capability and method |
| US6242893B1 (en) * | 1999-06-24 | 2001-06-05 | Bren-Tronics, Inc. | Lithium-ion and lithium polymer battery recharging |
| JP4642185B2 (en) * | 2000-06-16 | 2011-03-02 | ソニー株式会社 | battery pack |
| JP4786058B2 (en) * | 2001-05-01 | 2011-10-05 | 本田技研工業株式会社 | Power storage device remaining capacity detection device |
| WO2002093712A2 (en) * | 2001-05-14 | 2002-11-21 | Invensys Energy Systems (Nz) Limited | Battery charge management |
| FR2826125B1 (en) * | 2001-06-19 | 2003-09-19 | St Microelectronics Sa | METHOD AND DEVICE FOR MONITORING THE CHARGE OF A BATTERY, IN PARTICULAR A RECHARGEABLE BATTERY FOR A CELLULAR MOBILE TELEPHONE |
-
2003
- 2003-03-03 AT AT03445030T patent/ATE317983T1/en not_active IP Right Cessation
- 2003-03-03 EP EP03445030A patent/EP1455194B1/en not_active Expired - Lifetime
- 2003-03-03 DE DE60303590T patent/DE60303590T2/en not_active Expired - Lifetime
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2004
- 2004-02-13 CN CN200480005686A patent/CN100592099C/en not_active Expired - Fee Related
Also Published As
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| ATE317983T1 (en) | 2006-03-15 |
| CN1756963A (en) | 2006-04-05 |
| DE60303590T2 (en) | 2006-12-21 |
| DE60303590D1 (en) | 2006-04-20 |
| EP1455194A1 (en) | 2004-09-08 |
| EP1455194B1 (en) | 2006-02-15 |
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